La Ilaha Illa Allah Calligraphy لا إله إلا الله There is no deity other than Allah.

Islamic Calligraphy is the most popular form of Art in the muslim world. As Muslims are prohibited from drawing figural images , Muslim artists found in calligraphy a unique style to express their creativity

Iranian battle-mask, from the Safavid Dynasty c.) (Shahada inscribed on the top) (Scanned by me. Don’t remember the source.) I always thought this mask would make for some rather epic inspiration for a Middle-Eastern cyber-/steam-punk thing.